jQuery change event code not running possible event conflict

Let me start off by saying that this is my second day learning jQuery so I'm very much a beginner.

I've written a document ready function and all components are working except the countryField.change function I wrote. I'm pretty sure the web application already has a change function for this field and I'm not sure if there can be two of the same event on a field. When I say it's not working, I set a breakpoint in the Chrome debugger and it never enters the function.

Maybe I have to temporarily pause the existing event, run my code, then re-enable the default event?